As U.S. lawmakers commemorated the end of slavery by celebrating Juneteenth this month, many of them could have looked no further than their own family histories to find a more personal connection to what’s often called America’s “original sin.” In researching the genealogies of America’s political elite, a Reuters examination found that a fifth of the nation’s congressmen, living presidents, Supreme Court justices and governors are direct descendants of ancestors who enslaved Black people. Among 536 members of the last sitting Congress, for example, Reuters determined at least 100 descend from slaveholders.